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Small CB antenna


I originally used this antenna on the 28 MHz amateur band, but here I describe its modification
post 27 Apr 2024
Small CB antenna

Antenna CB 27 MHz Links

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Antenna doppia zeppelin modificata per 11mt
Abbiamo visto spesso come si possa incrementare il guadagno di un semplice dipolo aumentando la lunghezza del filo ed adattando l'impedenza con uno spezzone di cavo da 75 ohm

Antenna super quad 11mt
L'antenna descritta e una antenna ad elevato guadagno, facile da realizzare e da trasportare, quindi molto adatta per stazioni speciali o portatili

Calculator Antenna quad
Dimension of 2 element cubical quad for 27,25 Mhz

Antena Pulsar
Photo schema antennas

Formule di calcolo per J-pole 1/2λ
Per vhf e uhf e per tutte le altre bande


23cm Yagi Antenna building

23cm Yagi Antenna building Finished antenna at 1275 MHz SWR under 1:1.5 at resonant frequency

50 MHz preamp Gain 26dB with the BFG135

50 MHz preamp Gain 26dB with the BFG135 Preamps for 144 and 430 MHz, for 50 MHz, the BFG135a is a cheap transistor and in my view rather strong. It is not easily damaged by static discharge or RF power. FG connection

interface-for-digital-broadcasts-with-integrated-audio

Interface-for-digital-broadcasts-with-integrated-audio 4-port HUB, with a TUSB2046. With port 1 of the HUB we drive the FT232RL; with port 2 the PCM2904, furthermore, we decided to leave ports 3 and 4 free